<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>


</head>

<body>

<div id="app">
    <span v-bind:title="message">
        鼠标悬停此处查看绑定信息
    </span>
    {{message}}
</div>

<script src="https://cdn.jsdelivr.net/npm/vue@2.5.21/dist/vue.js "></script>

<script>
    var vm=new Vue({
        el:"#app",
        data:{
            message: "hello,vue!"
        }
    });
</script>

</body>
</html>